Datasheet
© 2007-2012 Microchip Technology Inc. DS70292G-page 163
dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04
11.6.2.2 Output Mapping
In contrast to inputs, the outputs of the peripheral pin
select options are mapped on the basis of the pin. In
this case, a control register associated with a particular
pin dictates the peripheral output to be mapped. The
RPORx registers are used to control output mapping.
Like the RPINRx registers, each register contains sets
of 5-bit fields, with each set associated with one RPn
pin (see Register 11-17 through Register 11-29). The
value of the bit field corresponds to one of the
peripherals, and that peripheral’s output is mapped to
the pin (see Ta b l e 11- 2 and Figure 11-3).
The list of peripherals for output mapping also includes
a null value of ‘00000’ because of the mapping
technique. This permits any given pin to remain
unconnected from the output of any of the pin
selectable peripherals.
FIGURE 11-3: MULTIPLEXING OF
REMAPPABLE OUTPUT
FOR RPn
TABLE 11-2: OUTPUT SELECTION FOR REMAPPABLE PIN (RPn)
0
21
3
RPnR<4:0>
default
U1TX Output enable
U1RTS Output enable
4
OC4 Output
0
21
3
default
U1TX Output
U1RTS Output
4
OC4 Output
Output Enable
Output Data
RPn
Function RPnR<4:0> Output Name
NULL 00000 RPn tied to default port pin
C1OUT 00001 RPn tied to Comparator1 Output
C2OUT 00010 RPn tied to Comparator2 Output
U1TX 00011 RPn tied to UART1 Transmit
U1RTS
00100 RPn tied to UART1 Ready To Send
U2TX 00101 RPn tied to UART2 Transmit
U2RTS
00110 RPn tied to UART2 Ready To Send
SDO1 00111 RPn tied to SPI1 Data Output
SCK1 01000 RPn tied to SPI1 Clock Output
SS1
01001 RPn tied to SPI1 Slave Select Output
SDO2 01010 RPn tied to SPI2 Data Output
SCK2 01011 RPn tied to SPI2 Clock Output
SS2
01100 RPn tied to SPI2 Slave Select Output
CSDO 01101 RPn tied to DCI Serial Data Output
CSCK 01110 RPn tied to DCI Serial Clock Output
COFS 01111 RPn tied to DCI Frame Sync Output
C1TX 10000 RPn tied to ECAN1 Transmit
OC1 10010 RPn tied to Output Compare 1
OC2 10011 RPn tied to Output Compare 2
OC3 10100 RPn tied to Output Compare 3
OC4 10101 RPn tied to Output Compare 4